US PATENT SUBCLASS 73 / 221
.~.~.~ With float operated valve

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

861  DF  VOLUME OR RATE OF FLOW {23}
*  DD  .~ Tank type {3}
219  DF  .~.~ Plural measuring chamber {3}
221.~.~.~ With float operated valve

DEFINITION

Classification: 73/221

(under subclass 219) Meters wherein the inlet and discharge valves of the measuring chambers are controlled by a float or floats. This subclass includes tank meters wherein the valves are operated by power means controlled by a float or floats.